PYSEC-2026-3909

    Dashboard / Vulnerabilities / PYSEC-2026-3909

    PYSEC-2026-3909

    Published: 10 Sept 2026Last Modified: 10 Sept 2026

    Summary: PyOD persistence.load deserializes untrusted artifacts before validation

    Details: A vulnerability was detected in yzhao062 pyod 3.5.0/3.5.1/3.5.2. Affected is the function pyod.utils.persistence.load of the file pyod/utils/persistence.py. Performing a manipulation of the argument path results in deserialization. The attack can be initiated remotely. The pull request to fix this issue requires some minor changes.

    References: https://nvd.nist.gov/vuln/detail/CVE-2026-15529, https://github.com/yzhao062/pyod/issues/697, https://github.com/yzhao062/pyod/pull/698, https://github.com/yzhao062/pyod/commit/16e6e3ad8921a4e18ccc8c2afe474db7d002c001, https://github.com/yzhao062/pyod, https://github.com/yzhao062/pyod/releases/tag/v3.6.2, https://pypi.org/project/pyod/3.6.2, https://vuldb.com/cve/CVE-2026-15529, https://vuldb.com/submit/854559, https://vuldb.com/vuln/377872, https://vuldb.com/vuln/377872/cti, https://pypi.org/project/pyod, https://github.com/advisories/GHSA-997v-r4v7-9f3g

    Affected packages

    Package

    Name: pyod

    Purl: pkg:pypi/pyod

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 3.5.0
    Fixed -3.6.2

    Affected versions

    3.5.0
    3.5.1
    3.5.2
    3.5.4

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2026-3909 | CVE-DB